function Header()
{
    
}

Header.prototype.show = function() 
{                        
    if ($("#top-nav").length == 0) {
        var mvlHeader = this.headerTmpl();        
        $("#header").empty();
        mvlHeader.appendTo("#header");
    }
}

Header.prototype.headerTmpl= function()
{    
    
      var h = '<div id="top-nav">';
         h += '<ul id="nav-list">';
         h += '<li id="admin-lnks">';
         h += 'Welcome Back ${username}! <br />';
         h += '<a href="#/logout">Logout</a> | <a href="https://register.pearsoncmg.com/userprofile" rel="external" target="_blank">Manage Account</a>';
         h += '</li>';
         h += '<li id="my-dashboard-lnk" class="dashboard-lnk-wrp">';
         h += '<a href="#/${role}/dashboard">My Dashboard</a>';
         h += '</li>';
         h += '<li id="help-lnk" class="dashboard-lnk-wrp">';
         h += '<a href="#/help">Help</a>';
         h += '</li>';
         h += '</ul>';
         h += '</div>';
         return $.tmpl(h, {username: auth_obj.getFirstName(), role: auth_obj.getRole()});
}